--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/prevayler/implementation/ByteCountStream.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,87 @@
+/*
+  The copyright of all source code included in this Prevayler distribution is
+  held by Klaus Wuestefeld, except the files that specifically state otherwise.
+  All rights are reserved. "PREVAYLER" is a trademark of Klaus Wuestefeld.
+
+
+  BSD License:
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+  - Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+  - Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+ 
+  - Neither the name of Prevayler nor the names of its contributors may be used
+  to endorse or promote products derived from this software without specific
+  prior written permission.
+
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package org.prevayler.implementation;
+
+import java.io.*;
+
+/** A FileOutputStream that counts the number of bytes written and forces all buffers to synchronize with the underlying device when flushed.
+*/
+final class ByteCountStream extends FileOutputStream {
+
+    public ByteCountStream(File file) throws IOException {
+		super(file);
+	}
+
+    public void flush() throws IOException {
+        /*
+          "The flush method of OutputStream does nothing." - JDK1.3 API
+          documentation. I'm calling it just in case it starts doing something
+          in a future version of FileOutputStream or OutputStream.
+        */
+        super.flush();
+
+        /*
+          As we're JDK 1.4, this saves a bit of time because we don't bother
+          flushing meta data (we only care about flushing content)
+        */
+        getChannel().force(false);
+
+        // Original
+        // getFD().sync();  //"Force all system buffers to synchronize with the underlying device." - JDK1.3 API documentation.
+    }
+
+    public void write(byte[] b) throws IOException {
+		super.write(b);
+	bytesWritten += b.length;
+	}
+
+	public void write(byte[] b, int off, int len) throws IOException {
+	super.write(b, off, len);
+	bytesWritten += len;
+	}
+
+    public void write(int b) throws IOException {
+		super.write(b);
+	++bytesWritten;
+	}
+
+    public long bytesWritten() {
+	return bytesWritten;
+	}
+
+    private long bytesWritten;
+}